As I mentioned above, they were great when I saw them a while back.
It's funny, I thought they'd only be okay since they were all essentially studio musicians and the like and I figured it'd be like putting a "Greatest Hits" album of theirs on and listening to it outdoors with a bunch of people. Instead, they extended most of the music and jammed it out quite nicely. I was very pleasantly surprised by how much I enjoyed the concert even considering I'm a pretty big fan.